scholarly journals Hybrid monitoring concept development. Modeling of pulse height spectra of gamma-radiation emitted from radioactive cloud released from NPP

2021 ◽  
Vol 30 (3) ◽  
pp. 93-102
Author(s):  
R.I. Bakin ◽  
◽  
A.A. Kiselev ◽  
E.A. Ilichev ◽  
M.A. Shvedov ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Measurement Data ◽  
Pulse Height ◽  
Concept Development ◽  
Radiation Doses ◽  
Radiation Factor ◽  
New Approach ◽  
Emergency Situations ◽  
Radiation Spectra ◽  
Radioactive Cloud

In emergency situations with the release of radioactivity to the environment, possible radiation doses to the affected public are estimated with computational modeling. However, it should be noted that the estimates to a certain degree depend on various calculation parameters that may make the predicted radiation doses inconclusive. To reduce occurring uncertainties is possible by adjusting estimated outcomes with measurement data. The gamma-radiation spectra from the released radioactive cloud is measured by systems for radiation situation monitoring in the area surrounding the source of radioactive materials release. The feasibility study aimed at obtaining information needed for improvement of radiation doses estimates quality should be carried out. Due to certain problems related to performance of experimental work, there is the need to devel-op new approach to calculate gamma-spectra of radioactivity emitted from the released cloud. The solution of this problem will allow to select the parameters of equipment and measurement parameters necessary for adjusting the forecasts of radiation doses to the population in a case of accidents with a radiation factor based on the results of processing gamma radiation spectra.

EVALUATION OF GAMMA RADIATION DOSES IN SOIL USING THE MONTE CARLO SIMULATION

2012 ◽  
Vol 11 (7) ◽  
pp. 1355-1360
Author(s):  
Clement Ionescu ◽  
Liana Simona Sbirna ◽  
Monica Daniela Mateescu ◽  
Clementina Sabina Moldovan ◽  
Sebastian Sbirna
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Gamma Radiation ◽  
Radiation Doses

Crystal growth and thermoluminescence response of NaZr2(PO4)3 at high gamma radiation doses

2013 ◽  
Vol 443 (1-3) ◽  
pp. 417-423 ◽  
Author(s):  
E. Ordóñez-Regil ◽  
A. Contreras-Ramírez ◽  
S.M. Fernández-Valverde ◽  
P.R. González-Martínez ◽  
H. Carrasco-Ábrego
Keyword(s):  
Crystal Growth ◽  
Gamma Radiation ◽  
Radiation Doses ◽  
High Gamma

Effect of Gamma Radiation on the Reduction of Salmonella strains, Listeria monocytogenes, and Shiga Toxin–Producing Escherichia coli and Sensory Evaluation of Minimally Processed Spinach (Tetragonia expansa)

2014 ◽  
Vol 77 (10) ◽  
pp. 1768-1772 ◽  
Author(s):  
ANA CAROLINA B. REZENDE ◽  
MARIA CRYSTINA IGARASHI ◽  
MARIA TERESA DESTRO ◽  
BERNADETTE D. G. M. FRANCO ◽  
MARIZA LANDGRAF
Keyword(s):  
Escherichia Coli ◽  
Listeria Monocytogenes ◽  
Gamma Radiation ◽  
Shiga Toxin ◽  
Radiation Doses ◽  
Minimally Processed ◽  
Tetragonia Expansa ◽  
Effects Of Irradiation On ◽  
Spinach Leaves

This study evaluated the effects of irradiation on the reduction of Shiga toxin–producing Escherichia coli (STEC), Salmonella strains, and Listeria monocytogenes, as well as on the sensory characteristics of minimally processed spinach. Spinach samples were inoculated with a cocktail of three strains each of STEC, Salmonella strains, and L. monocytogenes, separately, and were exposed to gamma radiation doses of 0, 0.2, 0.4, 0.6, 0.8, and 1.0 kGy. Samples that were exposed to 0.0, 1.0, and 1.5 kGy and kept under refrigeration (4°C) for 12 days were submitted to sensory analysis. D10-values ranged from 0.19 to 0.20 kGy for Salmonella and from 0.20 to 0.21 for L. monocytogenes; for STEC, the value was 0.17 kGy. Spinach showed good acceptability, even after exposure to 1.5 kGy. Because gamma radiation reduced the selected pathogens without causing significant changes in the quality of spinach leaves, it may be a useful method to improve safety in the fresh produce industry.

SOME EFFECTS OF GAMMA RADIATION ON THE STORAGE LIFE OF FRESH STRAWBERRIES

1964 ◽  
Vol 44 (2) ◽  
pp. 188-194 ◽  
Author(s):  
H. B. Heeney ◽  
W. M. Rutherford ◽  
K. F. MacQueen
Keyword(s):  
Gamma Radiation ◽  
Storage Period ◽  
Storage Life ◽  
Radiation Doses ◽  
Apparent Effect ◽  
Fungal Development ◽  
Radiation Treatments ◽  
Storage Temperatures

The effects of gamma radiation doses of 110,000, 220,000, and 330,000 rad on the storage life and quality of two varieties of strawberries stored at 40°, 55°, and 70° F were studied. Results indicated that a dose of 330,000 rad prevented fungal development of the Redcoat variety stored for 26 days at 40° F. The fungal-free period was sharply reduced at lower radiation doses or at higher storage temperatures. Under the conditions of this trial there was no apparent effect of radiation on appearance or texture of fruit.In organoleptic tests in the first two weeks of storage observers were not able to differentiate between radiation treatments. There was some preference for treated berries as the storage period increased. After 20 days the flavor of the fruit deteriorated very rapidly and it soon became commercially unacceptable.

scholarly journals New approach to the conceptual design of STUMM: A module dedicated to the monitoring of neutron and gamma radiation fields generated in IFMIF-DONES

2021 ◽  
Vol 172 ◽  
pp. 112866
Author(s):  
U. Wiącek ◽  
F. Arbeiter ◽  
B. Bieńkowska ◽  
D. Bocian ◽  
J. Castellanos ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Conceptual Design ◽  
New Approach ◽  
Radiation Fields

scholarly journals GAMMA-RADIATION SPECTRA OF 1200 MeV ELECTRONS IN THICK BERYLLIUM, SILICON AND TUNGSTEN SINGLE CRYSTALS

2019 ◽  
pp. 86-93
Author(s):  
G. L. Bochek ◽  
O. S. Deiev ◽  
V. I. Kulibaba ◽  
N. I. Maslov ◽  
V. D. Ovchinnik ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Single Crystals ◽  
Angular Distributions ◽  
Γ Radiation ◽  
Radiation Spectra ◽  
Solid Angles ◽  
Crystallographic Axes ◽  
And Tungsten

Gamma radiation spectra of 1200 MeV electrons from the single crystals of the beryllium 1.2 mm thick, silicon 1.5 mm and 15 mm thick and tungsten 1.18 mm thick along of the crystallographic axes were measured. Also spectral-angular distributions of gamma radiation from the silicon single crystals 1.5 mm thick along of the crystallographic axes < 100 >, < 110 > and < 111 > were measured. On the basis of these measurements the γ-radiation spectra for the different solid angles up to 6.97 × 10−6 sr were obtained.

scholarly journals То the problem of irradiation dosing of population in radionuclde studies

2001 ◽  
Vol 82 (5) ◽  
pp. 383-385
Author(s):  
V. G. Morozov ◽  
R. K. Ismagilov ◽  
V. F. Chuprun
Keyword(s):  
Gamma Radiation ◽  
Radiation Safety ◽  
Radiation Doses ◽  
Safety Standards ◽  
The Given

It is shown that with the introduction of new wording of the radiation safety standards - 99 regulating powers of gamma-radiation doses at the distance of one meter from the patient, treated by radiopharma-ceutical drugs, should not exceed three mcSv/h. The number noted is obviously set too high and should be substantiated. Abolition of the adopted standards and statement of the given regulations in the radiation safety standards 99 in new wording is not proven enough substantiated.

scholarly journals Effect of Gamma Radiation on the Mechanical Properties of Natural Fabric Reinforced Polyester Composites

2019 ◽  
Vol 27 (4(136)) ◽  
pp. 88-93
Author(s):  
K.Z.M. Abdul Motaleb ◽  
Md Shariful Islam ◽  
Rimvydas Milašius
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Gamma Radiation ◽  
Bending Strength ◽  
Polyester Resin ◽  
Radiation Doses ◽  
Elongation At Break ◽  
Bending Modulus ◽  
Polyester Composites

Two types of composites:(1) pineapple fabric reinforced polyester resin (Pineapple/PR) and (2) jute fabric reinforced polyester resin (Jute/PR) were prepared and the mechanical properties investigated for various gamma radiation doses ranging from 100-500 krad. Properties like tensile strength, Young’s modulus, elongation-at-break, bending strength, bending modulus and impact strength were increased significantly by 19%, 32%, 45%, 32%, 47% and 20%, respectively, at a dose of 300 krad for Pineapple/PR, and by 47%, 49%, 42%, 45%, 52% and 65%, respectively, at a dose of 200 krad for the Jute/PR composite in comparison to the non-irradiated composite. Gamma radiation improved the mechanical properties, but overdoses of radiation even caused a reduction in them.

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